Reservoir quality of fluvial sandstone reservoirs in salt-walled mini-basins: an example from the Seagull field, Central Graben, North Sea, UK

Abstract The Triassic fluvial sandstones of the Skagerrak Formation were deposited in a series of salt-walled mini-basins and act as important hydrocarbon reservoirs for several high-pressure, high-temperature (HPHT) fields in the Central Graben, North Sea. The HPHT reservoirs exhibit excellent rese...

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Auteurs principaux:	Stephan Stricker, Stuart J. Jones, Neil Meadows, Leon Bowen
Format:	article
Langue:	EN
Publié:	KeAi Communications Co., Ltd. 2018
Sujets:	Reservoir quality Halokinesis Diagenesis Clay minerals Porosity Disaggregation bands Science Q Petrology QE420-499
Accès en ligne:	https://doaj.org/article/b53515258d2d41bb90155e4d1813d76d
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spelling	oai:doaj.org-article:b53515258d2d41bb90155e4d1813d76d2021-12-02T04:11:11ZReservoir quality of fluvial sandstone reservoirs in salt-walled mini-basins: an example from the Seagull field, Central Graben, North Sea, UK10.1007/s12182-017-0206-x1672-51071995-8226https://doaj.org/article/b53515258d2d41bb90155e4d1813d76d2018-01-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-017-0206-xhttps://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract The Triassic fluvial sandstones of the Skagerrak Formation were deposited in a series of salt-walled mini-basins and act as important hydrocarbon reservoirs for several high-pressure, high-temperature (HPHT) fields in the Central Graben, North Sea. The HPHT reservoirs exhibit excellent reservoir quality considering their depth of burial and hence have been of high interest for hydrocarbon exploration. This research uses a multidisciplinary approach to assess the Skagerrak Formation fluvial reservoir quality from the Seagull field incorporating core analysis, petrography, electron microscopy, XRD analysis, fluid inclusion appraisal and burial history modelling. Halokinesis and salt withdrawal at the margin of the salt-walled mini-basin induced early disaggregation bands and fractures at shallow burial and led to increased influx of meteoric water and clay mineral infiltration from overlying sedimentation. The density of disaggregation bands correlates with the occurrence and magnitude of pore-filling authigenic clay minerals, concentrated along the margin of the salt-walled mini-basin. The fluvial channel sandstones of the Skagerrak Formation are subject to strong intra-basinal spatial reservoir quality variations despite diagenesis and low vertical effective stress having played a favourable role in arresting porosity loss.Stephan StrickerStuart J. JonesNeil MeadowsLeon BowenKeAi Communications Co., Ltd.articleReservoir qualityHalokinesisDiagenesisClay mineralsPorosityDisaggregation bandsScienceQPetrologyQE420-499ENPetroleum Science, Vol 15, Iss 1, Pp 1-27 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Reservoir quality Halokinesis Diagenesis Clay minerals Porosity Disaggregation bands Science Q Petrology QE420-499
spellingShingle	Reservoir quality Halokinesis Diagenesis Clay minerals Porosity Disaggregation bands Science Q Petrology QE420-499 Stephan Stricker Stuart J. Jones Neil Meadows Leon Bowen Reservoir quality of fluvial sandstone reservoirs in salt-walled mini-basins: an example from the Seagull field, Central Graben, North Sea, UK
description	Abstract The Triassic fluvial sandstones of the Skagerrak Formation were deposited in a series of salt-walled mini-basins and act as important hydrocarbon reservoirs for several high-pressure, high-temperature (HPHT) fields in the Central Graben, North Sea. The HPHT reservoirs exhibit excellent reservoir quality considering their depth of burial and hence have been of high interest for hydrocarbon exploration. This research uses a multidisciplinary approach to assess the Skagerrak Formation fluvial reservoir quality from the Seagull field incorporating core analysis, petrography, electron microscopy, XRD analysis, fluid inclusion appraisal and burial history modelling. Halokinesis and salt withdrawal at the margin of the salt-walled mini-basin induced early disaggregation bands and fractures at shallow burial and led to increased influx of meteoric water and clay mineral infiltration from overlying sedimentation. The density of disaggregation bands correlates with the occurrence and magnitude of pore-filling authigenic clay minerals, concentrated along the margin of the salt-walled mini-basin. The fluvial channel sandstones of the Skagerrak Formation are subject to strong intra-basinal spatial reservoir quality variations despite diagenesis and low vertical effective stress having played a favourable role in arresting porosity loss.
format	article
author	Stephan Stricker Stuart J. Jones Neil Meadows Leon Bowen
author_facet	Stephan Stricker Stuart J. Jones Neil Meadows Leon Bowen
author_sort	Stephan Stricker
title	Reservoir quality of fluvial sandstone reservoirs in salt-walled mini-basins: an example from the Seagull field, Central Graben, North Sea, UK
title_short	Reservoir quality of fluvial sandstone reservoirs in salt-walled mini-basins: an example from the Seagull field, Central Graben, North Sea, UK
title_full	Reservoir quality of fluvial sandstone reservoirs in salt-walled mini-basins: an example from the Seagull field, Central Graben, North Sea, UK
title_fullStr	Reservoir quality of fluvial sandstone reservoirs in salt-walled mini-basins: an example from the Seagull field, Central Graben, North Sea, UK
title_full_unstemmed	Reservoir quality of fluvial sandstone reservoirs in salt-walled mini-basins: an example from the Seagull field, Central Graben, North Sea, UK
title_sort	reservoir quality of fluvial sandstone reservoirs in salt-walled mini-basins: an example from the seagull field, central graben, north sea, uk
publisher	KeAi Communications Co., Ltd.
publishDate	2018
url	https://doaj.org/article/b53515258d2d41bb90155e4d1813d76d
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_version_	1718401393650302976

Reservoir quality of fluvial sandstone reservoirs in salt-walled mini-basins: an example from the Seagull field, Central Graben, North Sea, UK

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